<template>
  <div :class="{ 'hidden': hidden }" class="pagination-container">
    <el-pagination
      :background="background"
      v-model:current-page="currentPage"
      v-model:page-size="pageSize"
      :layout="layout"
      :page-sizes="pageSizes"
      :pager-count="pagerCount"
      :total="total"
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
    />
  </div>
</template>

<script lang="ts">
export default {
    name: 'Pagination'
}
</script>

<script setup lang="ts">
import { scrollTo } from '@/utils/scroll-to'
import { PropType } from "vue";

const props = defineProps({
    total: {
        required: true,
        type: Number
    },
    page: {
        type: Number,
        default: 1
    },
    limit: {
        type: Number,
        default: 20
    },
    pageSizes: {
        type: Array as PropType<number[]>,
        default() {
            return [10, 20, 30, 50]
        }
    },
    // 移动端页码按钮的数量端默认值5
    pagerCount: {
        type: Number,
        default: document.body.clientWidth < 992 ? 5 : 7
    },
    layout: {
        type: String,
        default: 'total, sizes, prev, pager, next, jumper'
    },
    background: {
        type: Boolean,
        default: true
    },
    autoScroll: {
        type: Boolean,
        default: true
    },
    hidden: {
        type: Boolean,
        default: false
    },
    float: {
        type: String,
        default: 'right'
    }
})

const emit = defineEmits(['update:page', 'update:limit', 'pagination']);
const currentPage = computed({
    get() {
        return props.page
    },
    set(val) {
        emit('update:page', val)
    }
})
const pageSize = computed({
    get() {
        return props.limit
    },
    set(val){
        emit('update:limit', val)
    }
})
function handleSizeChange(val: number) {
    if (currentPage.value * val > props.total) {
        currentPage.value = 1
    }
    emit('pagination', { page: currentPage.value, limit: val })
    if (props.autoScroll) {
        scrollTo(0, 800)
    }
}
function handleCurrentChange(val: number) {
    emit('pagination', { page: val, limit: pageSize.value })
    if (props.autoScroll) {
        scrollTo(0, 800)
    }
}
</script>

<style lang="scss" scoped>
.pagination-container {
  background: #fff;
  padding: 32px 16px;
  .el-pagination{
    float: v-bind(float);
  }
}
.pagination-container.hidden {
  display: none;
}
</style>
